20991517596

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{173}}^1\times {\mathrm{481501}}^1$

素因数の和:481691

約数の個数: 72

約数和(自身を含む): 60992821344

約数和(自身を除く): 40001303748

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 173, 252, 346, 519, 692, 1038, 1211, 1557, 2076, 2422, 3114, 3633, 4844, 6228, 7266, 10899, 14532, 21798, 43596, 481501, 963002, 1444503, 1926004, 2889006, 3370507, 4333509, 5778012, 6741014, 8667018, 10111521, 13482028, 17334036, 20223042, 30334563, 40446084, 60669126, 83299673, 121338252, 166599346, 249899019, 333198692, 499798038, 583097711, 749697057, 999596076, 1166195422, 1499394114, 1749293133, 2332390844, 2998788228, 3498586266, 5247879399, 6997172532, 10495758798, 20991517596]

約数ペア:

[(1, 20991517596), (2, 10495758798), (3, 6997172532), (4, 5247879399), (6, 3498586266), (7, 2998788228), (9, 2332390844), (12, 1749293133), (14, 1499394114), (18, 1166195422), (21, 999596076), (28, 749697057), (36, 583097711), (42, 499798038), (63, 333198692), (84, 249899019), (126, 166599346), (173, 121338252), (252, 83299673), (346, 60669126), (519, 40446084), (692, 30334563), (1038, 20223042), (1211, 17334036), (1557, 13482028), (2076, 10111521), (2422, 8667018), (3114, 6741014), (3633, 5778012), (4844, 4333509), (6228, 3370507), (7266, 2889006), (10899, 1926004), (14532, 1444503), (21798, 963002), (43596, 481501)]